/// <summary>
/// 构建 HtmlDomChangedEventArgs 对象
/// </summary>
/// <param name="attribute">发生变化的属性</param>
/// <param name="element">属性所属的元素</param>
/// <param name="action">属性所发生的操作</param>
public HtmlDomChangedEventArgs(IHtmlAttribute attribute, IHtmlElement element, HtmlDomChangedAction action)
{
IsAttributeChanged = true;
Attribute = attribute;
Container = element;
Action = action;
}
/// <summary>
/// 构建 HtmlDomChangedEventArgs 对象
/// </summary>
/// <param name="node">发生变化的节点</param>
/// <param name="container">节点所属的容器</param>
/// <param name="action">节点所发生的操作</param>
public HtmlDomChangedEventArgs(IHtmlNode node, IHtmlContainer container, HtmlDomChangedAction action)
{
IsAttributeChanged = false;
Node = node;
Container = container;
Action = action;
}
/// <summary>
/// 当属性被修改
/// </summary>
/// <param name="sender">引发事件的对象</param>
/// <param name="action">引发事件的操作</param>
/// <param name="attribute">被修改的属性</param>
/// <param name="element">属性所属的元素</param>
protected virtual void OnAttributeChanged(object sender, HtmlDomChangedAction action, IHtmlAttribute attribute, IHtmlElement element)
{
switch (action)
{
case HtmlDomChangedAction.Add:
AddAttribute(element, attribute);
break;
case HtmlDomChangedAction.Remove:
RemoveAttribute(element, attribute);
break;
default:
throw new InvalidOperationException("未知的 DOM 结构变化");
}
}
/// <summary>
/// 构建 HtmlDomChangedEventArgs 对象
/// </summary>
/// <param name="attribute">发生变化的属性</param>
/// <param name="element">属性所属的元素</param>
/// <param name="action">属性所发生的操作</param>
public HtmlDomChangedEventArgs( IHtmlAttribute attribute, IHtmlElement element, HtmlDomChangedAction action )
{
IsAttributeChanged = true;
Attribute = attribute;
Container = element;
Action = action;
}
/// <summary>
/// 构建 HtmlDomChangedEventArgs 对象
/// </summary>
/// <param name="node">发生变化的节点</param>
/// <param name="container">节点所属的容器</param>
/// <param name="action">节点所发生的操作</param>
public HtmlDomChangedEventArgs( IHtmlNode node, IHtmlContainer container, HtmlDomChangedAction action )
{
IsAttributeChanged = false;
Node = node;
Container = container;
Action = action;
}